<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue </title>
<script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/vue/3.2.26/vue.global.min.js"></script>
</head>
<body>
    <div id="app">
        <button @click="count++">
          Count is: {{ count }}
        </button>
      </div>

<script>
   const { createApp, ref } = Vue;

createApp({
  setup() {
    const count = ref(0);
    return { count };
  }
}).mount('#app')

</script>
</body>
</html>